Imperialism was one of the four contributing factors to the cause of World War One, along with secret alliances, militarism, and nationalism. It is the most important cause of WW1, because it created a build-up of tension in Europe and outside of Europe, and through imperialism, the three other causes were able to affect the beginnings of the war.
Cornelia Arnolda Johanna "Corrie" ten Boom (15 April 1892 – 15 April 1983) was a Dutch Christian watchmaker and later a writer who worked with her father, Casper ten Boom, her sister Betsie ten Boom and other family members to help many Jews escape from the Nazis during the Holocaust in World War II by hiding them in her home. She believed her actions were following the will of God. They were caught, and she was arrested and sent to the Ravensbrück concentration camp. Her most famous book, The Hiding Place, is a biography that recounts the story of her family's efforts and how she found and shared hope in God while she was imprisoned at the concentration camp.
In May 1940, the Germans invaded the Netherlands. One of their restrictions was the banning of the youth club. In May 1942, a well-dressed woman came to the Ten Booms' with a suitcase in hand and told them that she was a Jew, her husband had been arrested several months earlier, her son had gone into hiding and Occupation authorities had recently visited her so she was afraid to go back. She heard that the Ten Booms had previously helped their Jewish neighbors, the Weils, and asked if they could help her too. Casper readily agreed that she could stay with them although the police headquarters was only half a block away. A devoted reader of the Old Testament, he knew that the Jews were the "chosen people" and told the woman, "In this household, God's people are always welcome." The family then became very active in the Dutch underground, hiding refugees and honouring the Jewish Sabbath. The family never sought to convert any of the Jews who stayed with them.
Corrie and her sister Betsie opened their home to Jewish refugees and members of the resistance movement, and as a result they were sought after by the Gestapo and its Dutch counterpart. The refugee work which Ten Boom and her sister did at the Beje became known by the Dutch Resistance, which sent an architect to the Ten Boom home to build a secret room adjacent to the room for the Jews who were in hiding and an alert buzzer that could be used to warn the refugees to get into the room as quickly as possible. Thus the Ten Booms created "The Hiding Place" (Dutch: De Schuilplaats or de Béjé, pronounced "bayay", an abbreviation of the street, Barteljorisstraat). The secret room was in Corrie's bedroom behind a false wall and would hold 6 people. A ventilation system was installed for the occupants. A buzzer could be heard in the house to warn the refugees to get into the room as quickly as possible during security sweeps through the neighborhood. They had plenty of room, but wartime shortages meant that food was scarce. Every non-Jewish Dutch person had received a ration card, the requirement for obtaining weekly food coupons. Through her charitable work, Ten Boom knew many people in Haarlem and remembered a family with a disabled daughter, whose father was a civil servant who was now in charge of the local ration-card office. She went to his house one evening, and when he asked how many ration cards she needed, "I opened my mouth to say, 'Five,'" Ten Boom wrote in The Hiding Place. "But the number that unexpectedly and astonishingly came out instead was: 'One hundred.'" He gave them to her and she provided cards to every Jew she met.